F-prot for DOS just installs in a directory by itself and is operated simply by starting the *.exe file. You have to manually check for updates, subscribe to the update email system, or use a third party ftp updater for F-prot. Since I'm on W98 I only use for a boot time scan and like Waldo suggested in case I can't open windows for some unfortunate reason and need to scan for viruses from the DOS prompt.